1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
|
/*
* Copyright (c) 1998, 2024, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
import java.awt.BorderLayout;
import java.awt.Choice;
import java.awt.Frame;
import jdk.test.lib.Platform;
/*
* @test
* @bug 4134619
* @summary Tests that the EventDispatchThread doesn't deadlock with
* user threads which are modifying a Choice component.
* @library /java/awt/regtesthelpers /test/lib
* @build PassFailJFrame jdk.test.lib.Platform
* @run main/manual DeadlockTest
*/
public class DeadlockTest extends Thread {
static volatile Choice choice1;
static volatile Choice choice2;
static volatile Choice choice3;
static volatile Frame frame;
static int itemCount = 0;
private static final boolean isWindows = Platform.isWindows();
private static final String INSTRUCTIONS = """
Click on the top Choice component and hold the mouse still briefly.
Then, without releasing the mouse button, move the cursor to a menu
item and then again hold the mouse still briefly.
%s
Release the button and repeat this process.
Verify that this does not cause a deadlock
or crash within a reasonable amount of time.
""".formatted(
isWindows
? "(menu can automatically collapse sometimes, this is ok)\n"
: ""
) ;
public static void main(String[] args) throws Exception {
DeadlockTest deadlockTest = new DeadlockTest();
PassFailJFrame passFailJFrame = PassFailJFrame.builder()
.title("DeadlockTest Instructions")
.instructions(INSTRUCTIONS)
.columns(45)
.testUI(deadlockTest::createAndShowUI)
.build();
deadlockTest.start();
passFailJFrame.awaitAndCheck();
}
public Frame createAndShowUI() {
frame = new Frame("Check Choice");
frame.setLayout(new BorderLayout());
choice1 = new Choice();
choice2 = new Choice();
choice3 = new Choice();
frame.add(choice1, BorderLayout.NORTH);
frame.add(choice3, BorderLayout.CENTER);
frame.add(choice2, BorderLayout.SOUTH);
frame.pack();
return frame;
}
public void run() {
while (true) {
if (choice1 != null && itemCount < 40) {
choice1.add("I am Choice, yes I am : " + itemCount * itemCount);
choice2.add("I am the same, yes I am : " + itemCount * itemCount);
choice3.add("I am the same, yes I am : " + itemCount * itemCount);
itemCount++;
}
if (itemCount >= 20 && choice1 != null &&
choice1.getItemCount() > 0) {
choice1.removeAll();
choice2.removeAll();
choice3.removeAll();
itemCount = 0;
}
frame.validate();
try {
Thread.sleep(1000);
} catch (Exception ignored) {}
}
}
}
|
